This proposal aims to extend our understanding of ionic liquid structure by performing measurements that will complement the data previousy collected on SANDALS. We propose to examine the temperature effects on the nanoscale domains of 1-octyl-3-methylimidazolium hexafluorophosphate (at 30, 70, and 90 °C) in order to obtain a dynamical correlation of the structure length scaling with temperature, and also collect data for 1-tetradecyl-3-methylimidazolium hexafluorophosphate in both the smectic liquid crystalline and isotropic liquid states (at 75 and 95 °C) in order to relate the postulated interdigitated bilayer structure of the liquid crystals to models from the isotropic liquid structure.